Average annual temperature is 27.5 °C
Absolute maximum temperature: 36.9 °C
Absolute minimum temperature: 20.2 °C
Number of sunny days: 115 days
Number of rainy days: 250 days
Look at detailed online map of Istagapán
* Weather data for Istagapán El Salvador is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 34.3 | 36.9 | 35.3 | 35.7 | 36.1 | 32.6 | 36.1 | 33.4 | 33.1 | 32.0 | 32.9 | 35.5 |
| Average daytime temperature (°C) | 31.7 | 32.7 | 32.5 | 33.4 | 33.4 | 30.8 | 32.7 | 31.0 | 31.7 | 30.1 | 30.6 | 33.3 |
| Average temperature (°C) | 26.9 | 27.9 | 27.8 | 28.6 | 28.9 | 27.4 | 28.1 | 27.3 | 27.3 | 26.3 | 26.1 | 27.9 |
| Average night temperature (°C) | 23.1 | 24.2 | 23.9 | 24.4 | 25.0 | 24.3 | 23.9 | 23.9 | 23.7 | 23.2 | 22.3 | 23.4 |
| Absolute minimum temperature (°C) | 20.3 | 21.3 | 22.3 | 22.2 | 23.8 | 23.1 | 22.9 | 22.8 | 22.4 | 21.9 | 20.2 | 21.3 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 |
| Daylight mean duration (h) | 11.4 | 11.7 | 12.1 | 12.4 | 12.8 | 12.9 | 12.8 | 12.6 | 12.2 | 11.8 | 11.5 | 11.3 |
| Daylight minimum duration (h) | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 |
| Sunshine mean duration (h) | 10.4 | 10.8 | 11.2 | 11.3 | 11.2 | 10.2 | 10.8 | 10.3 | 10.2 | 9.0 | 9.8 | 10.4 |
| Precipitation (mm) | 3 | 3 | 25 | 62 | 83 | 260 | 130 | 204 | 258 | 316 | 169 | 4 |
| Sunny days | 22 | 25 | 11 | 8 | 7 | 0 | 4 | 4 | 1 | 2 | 9 | 22 |
| Rainy days | 9 | 3 | 20 | 22 | 24 | 30 | 27 | 27 | 29 | 29 | 21 | 9 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Istagapán is at